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7th Unit 4 Vocab
7th grade unit 4 vocabulary
| Term | Definition |
|---|---|
| Biogenesis | theory which states that life can only come from other life |
| Controlled Experiment | An experiment which has two groups kept in the same environment under the same conditions; one group is tested by changing one factor |
| Inorganic | A substance that does not contain carbon |
| Organic | A substance that contains carbon, an element found in all living things |
| Ozone | The layer of the atmosphere that protects the earth from the sun's radiation |
| Spontaneous Generation | The belief that living things can impulsively generate from nonliving materials |
| Carnivore | A consumer that eats only other animals |
| Consumer | An animal that relies on plants or other consumers for food and energy |
| Decomposer | A consumer that breaks down dead organisms into material that is absorbed into the soil |
| Energy Pyramid | A model that shows the transfer of energy from producers to different types of consumers |
| Fight-or-Flight | A response that occurs when an animal feels threatened by a predator and prepares to either fight the predator or run away |
| Herbivore | An animal that obtains food and energy directly from producers, or plants |
| Homeostasis | The tendency of an organism to respond to stimuli in order to maintain a stable internal environment |
| Omnivore | A type of consumer that can eat both plants and animals |
| Organ | A collection of tissues that share a common function |
| Organ System | A group of organs working together to perform a specific function |
| Phototropism | The growth of a plant in response to light |
| Primary Consumer | An organism that consumes producers |
| Producer | An organism that is able to make food by means of photosynthesis |
| Secondary Consumer | An organism that eats primary consumers |
| Stimulus | Any change in an organism or its environment that causes a response |
| Taxonomy | A classification system that arranges organisms into categories |
| Tertiary Consumer | An organism that eats secondary consumers |
| Tissue | A group of cells that share a function |
| Biomass | Organic matter in organisms which can be broken down and used as energy |
| Chemical Change | A change that alters the chemical composition of a substance |
| Compost Pile | A mixture of decaying organic material |
| Fission | Process of breaking or splitting a nucleus |
| Force | A push or pull |
| Friction | A force that resists motion when two surfaces rub together |
| Fusion | Process of joining nuclei together |
| Heat | The transfer of thermal energy from one object to another or from an object to its surroundings, due to a difference in temperature |
| Inertia | The tendency of an object to resist a change in motion |
| Kinetic Energy | Energy of motion |
| Law of Conservation of Energy | The law that states that energy cannot be created or destroyed, but it can be transformed |
| Law of Conservation of Mass | The law that states that mass cannot be created or destroyed; it is conserved |
| Mechanical Advantage | occurs when the force of a person applies is multiplied by using a machine |
| Net Force | The combination of two forces acting on an object |
| Newton | Unit of measurement of force |
| Nitrogen Fixation | Combining nitrogen with other elements to make it useful to organisms |
| Physical Change | A change that alters the form, state, or appearance of matter, but not its chemical composition |
| Potential Energy | An object's stored energy because of its position |
| Temperature | The measure of the average kinetic energy of the particles of an object |
| Work | Takes place when force is applied to an object, and the object moves in the direction of the force |
Created by:
Hillerywest
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